废砖大骨料堆石混凝土内部破坏特征研究  

Characteristic Research on Internal Failure of Waste Brick Aggregate Concrete

作　　者：苏伟[1] 胡宝月[2] 李海涛[1] 王竹青[1] 李军雪[1] 冯玥[1] 

机构地区：[1]河北农业大学理工学院,黄骅061100 [2]河北农业大学基础课部,黄骅061100

出　　处：《混凝土与水泥制品》2017年第6期16-19,共4页China Concrete and Cement Products

基　　金：河北农业大学理工基金项目(LG20150303);河北农业大学理工基金重点项目(ZD201621);河北农业大学渤海校区师生协同创新项目(bhxt0603);河北省高等学校科学技术研究项目(Z2015158)

摘　　要：对废砖大骨料堆石混凝土进行试验研究,分析了混凝土抗压强度特点和应力-应变关系,着重分析了混凝土内部破坏特征。研究结果表明,堆石混凝土的抗压强度与骨料的强度有着密切关系,废砖大骨料堆石混凝土的强度偏低,应力-应变关系曲线与普通混凝土的曲线形状相近,弹性模量偏小。混凝土在受压过程中,破坏形式多样化,大骨料的强度和表面粗糙程度影响内部破坏型式,粗略分为三种类型,分别是废砖-混凝土单裂缝混合破坏、废砖-混凝土多裂缝混合破坏和砖骨料大面积破坏。The experimental study on waste brick large aggregate concrete was carried out. The compressive strength and stress-strain relationship of concrete were analyzed. The results show that the compressive strength of high roekfill concrete and aggregate strength are closely related, the strength of waste brick aggregate roekfill concrete is lower, stress- strain curve is similar to the ordinary concrete curve, the elastic modulus is smaller. In the process of concrete compres- sion, destruction forms are diverse, and the strength and surface roughness of the large aggregate affect the internal failure mode. It can be roughly divided into three types, namely, the mixed damage of waste brick concrete single crack, the mixed damage of waste brick concrete, and the failure of brick aggregate.

关 键 词：废砖 大骨料 堆石混凝土 抗压强度 内部破坏 

分 类 号：TU528.041[建筑科学—建筑技术科学]